public class Application{
  public static void main(String args[]){
   MobileTelephone telephone = new MobileTelephone();
  SIM sim = new SIMOfChinaMobile();
  sim.setNumber("13887656432");
  telephone.useSIM(sim);
  telephone.showMess();
   sim = new SIMOfChinaUnicom();
   sim.setNumber("13098766437");
   telephone.useSIM(sim);
   telephone.showMess();
  }
}
